Table 26 Sept 2026From “What is measurement error? The gap between a construct and its indicator”

Which mechanisms can create the gap?

Table 2Which mechanisms can create the gap?

Mechanism	What changes	Synthetic commercial example	First validation question
Construct underrepresentation	The indicator omits relevant parts of the declared domain	Login count records access but not completion of the promised workflow	Which facets of the construct are absent from the rule?
Construct contamination	The indicator includes causes or signals outside the target	Email count includes automation, list size, and administration as well as selling work	Which non-target processes also move the indicator?
Recording or transcription error	The intended observation is entered, transferred, or coded incorrectly	A stage is saved one step late or a currency code is dropped	Can the source event, version, and transformation be replayed?
Temporal or grain mismatch	The indicator and target refer to different units or periods	A current stage is compared with a quarter-end outcome after the stage was edited	Do unit key, timestamp, and observation window align?
Threshold misclassification	A continuous or ambiguous condition is forced into a category	“Qualified” changes when the reviewer or threshold changes	Is the rule versioned and are borderline cases inspectable?
Missingness or non-observation	A value is absent, censored, or unavailable rather than zero	No report export is recorded because the event was outside the instrument	Is the missing state distinct from non-occurrence?

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Source: Table from this essay. Sources and interpretation are given in the article.

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From the essay

From the research bench

What is measurement error? The gap between a construct and its indicator

Measurement error begins when an observed indicator is treated as the construct itself. Define the target, indicator, error mechanism, and validation path.

6 Sept 2026

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Isoglu, S. (2026). Which mechanisms can create the gap? [Table]. isoglu.com. https://isoglu.com/insights/exhibits/isoglu-2026-what-is-measurement-error-fig02/

BibTeX

@misc{isoglu-2026-what-is-measurement-error-fig02,
  author = {Isoglu, Sinan},
  title = {{Which mechanisms can create the gap?}},
  year = {2026},
  howpublished = {Table 2, isoglu.com},
  url = {https://isoglu.com/insights/exhibits/isoglu-2026-what-is-measurement-error-fig02/},
  note = {From the essay {What is measurement error? The gap between a construct and its indicator}}
}

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  <figcaption>Table 2: Which mechanisms can create the gap?. Source: Table from this essay. Sources and interpretation are given in the article. <a href="https://isoglu.com/insights/exhibits/isoglu-2026-what-is-measurement-error-fig02/">View exhibit</a>.</figcaption>
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